A rough endoplasmic reticulum-like VSe<sub>2</sub>/rGO anode for superior sodium-ion capacitors

Wu, Yuanke; Chen, Hao; Zhang, Longcheng; Li, Qiulin; Xu, Maowen; Bao, Shu‐Juan

doi:10.1039/c9qi00809h

Cited by 52 publications

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“…After analyzing impedance data of FeSe 2 @rGO and FeSe 2 , it can be seen that the charge transfer speed and ion diffusion rate D

_{Na^{+}}

of FeSe 2 @rGO are faster than FeSe 2 . Such a rapid sodium ion diffusion rate is due to the reduction of FeSe 2 particle size and the addition of rGO to enhance the conductivity of the reaction system [30] …”

Section: Resultsmentioning

confidence: 99%

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Zhang

Zhong

et al. 2021

ChemSusChem

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Exploitation of superior anode materials is a key step to realize the pursuit of high‐performance sodium‐ion batteries. In this work, a reduced graphene oxide‐wrapped FeSe2 (FeSe2@rGO) composite derived from a metal–organic framework (MOF) was synthesized to act as the anode material of sodium‐ion batteries. The MOF‐derived carbon framework with high specific surface area could relieve the large volumetric change during cycling and ensure the structural stability of electrode materials. Besides, the rGO conductive network allowed to promote the electron transfer and accelerate reaction kinetics as well as to provide a protection role for the internal FeSe2. As a result, the FeSe2@rGO composite exhibited a high capacity of 350 mAh g−1 after 600 cycles at 5 A g−1. Moreover, in situ XRD was conducted to explore the reaction mechanism of the FeSe2@rGO composite upon sodiation/de‐sodiation. Importantly, the presented method for the synthesis of MOF‐derived materials wrapped by rGO could not only be used for FeSe2@rGO‐based sodium‐ion batteries but also for the different transition metal‐based composite materials for electrochemical devices, such as water splitting and sensors.

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“…After analyzing impedance data of FeSe 2 @rGO and FeSe 2 , it can be seen that the charge transfer speed and ion diffusion rate D

_{Na^{+}}

Section: Resultsmentioning

confidence: 99%

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Zhang

Zhong

et al. 2021

ChemSusChem

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“…[203] The energy density of the device is 20 Wh kg À1 ,w hich is about three times that of ac onventionalc arbon-based supercapacitor. [204] Subsequently,v ariousL ICs based on LTOa nd other LIB electrodes including insertion, conversion, and alloy types such as Co 3 O 4, [205] RuO x, [206] nickel cobaltite aerogels, [207] TiO 2 , [208] Li 7 Ti 5 O 12 , [209] graphene, [210] graphite, [211] pseudocapacitive T-Nb 2 O 5 , [212] [213] VN, [214] MoS 2, [215] VSe 2 , [216] and Sn@C [217] have been reported. In LICs, carbonaceous materials such as AC, CNTs, graphene, and metal-organic framework-derived porous carbonsa re widely used as the positive electrodes, [204] which have ah igh powerd ensity due to fast ion absorption/desorption.…”

Section: D Tmds For Aicsmentioning

confidence: 99%

“…[236] VSe 2 has as imilar layered structure as MoSe 2 but metallic characteristics favorable for Na ion storage. Wu et al [216] prepared rough endoplasmic reticulum-like 3D VSe 2 /rGOa erogel nanocomposites as the anode in SICs. VSe 2 in the 3D VSe 2 /rGO aerogel is uniformly dispersed on both sides of rGO to form the sandwiched nanosheets (Figures 26 A, B).…”

Section: D Tmds For Aicsmentioning

confidence: 99%

“…The 3D VSe 2 /rGO aerogel electrode has ah igh specific capacity of 196.5 mAh g À1 at 1.0 Ag À1 after 5000 cycles, and the hybrid SIC with aV Se 2 /rGO anode andA Cc athode shows large energy and power densities of 106 and 68 Wh kg À1 under 125 and 5000 Wkg À1 ,r espectively.M oreover,i ts hows good cycling stability with 30 Wh kg À1 retention after 1000 cycles (Figure 26 D) boding well for next-generation high-energya nd high-power devices. [216] Recently,Y ie tal. fabricated N-doped MoSe 2 /graphene (N-MoSe 2 /G) composites with favorable pseudocapacitive K + storage for KICs using ad iatomite-templated synthetic strategy (Figure 27 A).…”

Section: D Tmds For Aicsmentioning

confidence: 99%

“…VSe 2 has a similar layered structure as MoSe 2 but metallic characteristics favorable for Na ion storage. Wu et al . prepared rough endoplasmic reticulum‐like 3D VSe 2 /rGO aerogel nanocomposites as the anode in SICs.…”

Section: D Tmds‐based Electrode Materials For Electrochemical Energymentioning

confidence: 99%

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Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Zhang

Liao

et al. 2020

ChemSusChem

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On the heels of exacerbating environmental concerns and ever‐growing global energy demand, development of high‐performance renewable energy‐storage and ‐conversion devices has aroused great interest. The electrode materials, which are the critical components in electrochemical energy storage (EES) devices, largely determine the energy‐storage properties, and the development of suitable active electrode materials is crucial to achieve efficient and environmentally friendly EES technologies albeit the challenges. Two‐dimensional transition‐metal chalcogenides (2D TMDs) are promising electrode materials in alkali metal ion batteries and supercapacitors because of ample interlayer space, large specific surface areas, fast ion‐transfer kinetics, and large theoretical capacities achieved through intercalation and conversion reactions. However, they generally suffer from low electronic conductivities as well as substantial volume change and irreversible side reactions during the charge/discharge process, which result in poor cycling stability, poor rate performance, and low round‐trip efficiency. In this Review, recent advances of 2D TMDs‐based electrode materials for alkali metal‐ion energy‐storage devices with the focus on lithium‐ion batteries (LIBs), sodium‐ion batteries (SIBs), potassium‐ion batteries (PIBs), high‐energy lithium–sulfur (Li–S), and lithium–air (Li–O2) batteries are described. The challenges and future directions of 2D TMDs‐based electrode materials for high‐performance LIBs, SIBs, PIBs, Li–S, and Li–O2 batteries as well as emerging alkali metal‐ion capacitors are also discussed.

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Unlocking the Design Paradigm of In‐Plane Heterojunction with Built‐in Bifunctional Anion Vacancy for Unexpectedly Fast Sodium Storage

Ma,

Zhao,

Wang

et al. 2023

Advanced Materials

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Transition metal chalcogenide (TMD) electrodes in sodium‐ion batteries exhibit intrinsic shortcomings such as sluggish reaction kinetics, unstable conversion thermodynamics, and substantial volumetric strain effects, which lead to electrochemical failure. This report unlocks a design paradigm of VSe2−x/C in‐plane heterojunction with built‐in anion vacancy, achieved through an in situ functionalization and self‐limited growth approach. Theoretical and experimental investigations reveal the bifunctional role of the Se vacancy in enhancing the ion diffusion kinetics and the structural thermodynamics of NaxVSe2 active phases. Moreover, this in‐plane heterostructure facilitates complete face contact between the two components and tight interfacial conductive contact between the conversion phases, resulting in enhanced reaction reversibility. The VSe2−x/C heterojunction electrode exhibits remarkable sodium‐ion storage performance, retaining specific capacities of 448.7 and 424.9 mAh g−1 after 1000 cycles at current densities of 5 and 10 A g−1, respectively. Moreover, it exhibits a high specific capacity of 353.1 mAh g−1 even under the demanding condition of 100 A g−1, surpassing most previous achievements. The proposed strategy can be extended to other V5S8−x and V2O5−x‐based heterojunctions, marking a conceptual breakthrough in advanced electrode design for constructing high‐performance sodium‐ion batteries.

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A rough endoplasmic reticulum-like VSe₂/rGO anode for superior sodium-ion capacitors

Abstract: A rough endoplasmic reticulum-like VSe2/rGO were designed to tackle the sluggish sodium ion storage and severe volume expansion in a sodium ion capacitor.

Cited by 52 publications

References 32 publications

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Unlocking the Design Paradigm of In‐Plane Heterojunction with Built‐in Bifunctional Anion Vacancy for Unexpectedly Fast Sodium Storage

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A rough endoplasmic reticulum-like VSe2/rGO anode for superior sodium-ion capacitors

Abstract: A rough endoplasmic reticulum-like VSe2/rGO were designed to tackle the sluggish sodium ion storage and severe volume expansion in a sodium ion capacitor.

Cited by 52 publications

References 32 publications

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe2 Composite

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe2 Composite

Two‐Dimensional Transition Metal Chalcogenides for Alkali Metal Ions Storage

Unlocking the Design Paradigm of In‐Plane Heterojunction with Built‐in Bifunctional Anion Vacancy for Unexpectedly Fast Sodium Storage

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Product

Resources

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A rough endoplasmic reticulum-like VSe₂/rGO anode for superior sodium-ion capacitors

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite

Highly Efficient Sodium‐Ion Storage Enabled by an rGO‐Wrapped FeSe₂ Composite